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comparison libtommath/bn_mp_init.c @ 1739:13d834efc376 fuzz

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merge from main
author Matt Johnston <matt@ucc.asn.au>
date Thu, 15 Oct 2020 19:55:15 +0800
parents 1051e4eea25a
children
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1562:768ebf737aa0 1739:13d834efc376
1 #include <tommath_private.h> 1 #include "tommath_private.h"
2 #ifdef BN_MP_INIT_C 2 #ifdef BN_MP_INIT_C
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis 3 /* LibTomMath, multiple-precision integer library -- Tom St Denis */
4 * 4 /* SPDX-License-Identifier: Unlicense */
5 * LibTomMath is a library that provides multiple-precision
6 * integer arithmetic as well as number theoretic functionality.
7 *
8 * The library was designed directly after the MPI library by
9 * Michael Fromberger but has been written from scratch with
10 * additional optimizations in place.
11 *
12 * The library is free for all purposes without any express
13 * guarantee it works.
14 *
15 * Tom St Denis, [email protected], http://libtom.org
16 */
17 5
18 /* init a new mp_int */ 6 /* init a new mp_int */
19 int mp_init (mp_int * a) 7 mp_err mp_init(mp_int *a)
20 { 8 {
21 int i; 9 /* allocate memory required and clear it */
10 a->dp = (mp_digit *) MP_CALLOC((size_t)MP_PREC, sizeof(mp_digit));
11 if (a->dp == NULL) {
12 return MP_MEM;
13 }
22 14
23 /* allocate memory required and clear it */ 15 /* set the used to zero, allocated digits to the default precision
24 a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * MP_PREC); 16 * and sign to positive */
25 if (a->dp == NULL) { 17 a->used = 0;
26 return MP_MEM; 18 a->alloc = MP_PREC;
27 } 19 a->sign = MP_ZPOS;
28 20
29 /* set the digits to zero */ 21 return MP_OKAY;
30 for (i = 0; i < MP_PREC; i++) {
31 a->dp[i] = 0;
32 }
33
34 /* set the used to zero, allocated digits to the default precision
35 * and sign to positive */
36 a->used = 0;
37 a->alloc = MP_PREC;
38 a->sign = MP_ZPOS;
39
40 return MP_OKAY;
41 } 22 }
42 #endif 23 #endif
43
44 /* ref: $Format:%D$ */
45 /* git commit: $Format:%H$ */
46 /* commit time: $Format:%ai$ */